3 years ago

Find the measure of the missing angle.

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

7 0

The correct answer is 26 degrees.

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Substitute in the values of both given coordinates & form 2 equations:

$\left \{ {{A(2)+B(-1)=1} \atop {A(-3)+B(-2)=1}} \right. \\\\=\left \{ {{2A-B=1} \atop {-3A-2B=1}} \right.$

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$2A-B=1\\-B=1-2A\\B=2A-1$

Substitute in the B-value to the other equation:

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Find the B-value using the equation from before:

$B=2A-1=2(\frac{1}{7})-1=\frac{2}{7} -\frac{7}{7} =-\frac{5}{7}$

Therefore the equation Ax + By = 1 would equal:

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